Get quick and reliable adaptations with the Reflux 819/FO

Reflux 819/FO is a downstream pilot-controlled pressure regulator for medium and high-pressure applications. It is particularly suitable for use within the framework of installation for the distribution of natural gas, as well as for supplying network for civil and industrial use.

The Reflux 819/FO regulator is classified as a fail open regulator.

Reflux 819/FO Pressure Regulator Specifications

Technical data
Accuracy Class
Up to 1%
Available Size
1″- 2″- 3″- 4″- 6″- 8″- 10″
Closing Pressure Class SG
5% to 1% depending on outlet pressure
Design Temperature
-40°C to +60°C (-40°F to +140°F)
Design Pressure
1,450 PSIG (10,000 kPa)
Class 150-300-600 RF or RTJ according to ANSI B16.5 and PN 16 according to ISO 7005
Minimum Working Differential Pressure
200 kPa when used alone; 50 kPa bar when used in combination with a Reflux 819 monitor
Outlet Pressure Range of Wd
14.5-1,073 PSIG